Tumbling for a good cause, the boys and girls will try their hands and feet at doing as many cartwheels as they can in a row. The goal is for each to complete a set of 100 cartwheels without stopping, according to the academy.

Spectators are encouraged to sponsor participating children in the free event, which takes place from 2 p.m. to 4 p.m. at the gymnastics academy located at 72 Woodland Ave. in San Rafael.